ABAP Select data from SAP table PJP_LV_EXPORT_DISPLAY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PJP_LV_EXPORT_DISPLAY table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to PJP_LV_EXPORT_DISPLAY. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the PJP_LV_EXPORT_DISPLAY table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_PJP_LV_EXPORT_DISPLAY TYPE STANDARD TABLE OF PJP_LV_EXPORT_DISPLAY,
      WA_PJP_LV_EXPORT_DISPLAY TYPE PJP_LV_EXPORT_DISPLAY,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <PJP_LV_EXPORT_DISPLAY> TYPE PJP_LV_EXPORT_DISPLAY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PJP_LV_EXPORT_DISPLAY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PJP_LV_EXPORT_DISPLAY
  INTO TABLE IT_PJP_LV_EXPORT_DISPLAY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PJP_LV_EXPORT_DISPLAY
*  INTO TABLE @DATA(IT_PJP_LV_EXPORT_DISPLAY2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_PJP_LV_EXPORT_DISPLAY INDEX 1 INTO DATA(WA_PJP_LV_EXPORT_DISPLAY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PJP_LV_EXPORT_DISPLAY ASSIGNING <PJP_LV_EXPORT_DISPLAY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PJP_LV_EXPORT_DISPLAY>-RESCA = 1.
<PJP_LV_EXPORT_DISPLAY>-RESTX = 1.
<PJP_LV_EXPORT_DISPLAY>-GIAJI = 1.
<PJP_LV_EXPORT_DISPLAY>-GIAJT = 1.
<PJP_LV_EXPORT_DISPLAY>-INSCC = 1.

ENDLOOP.

LOOP AT IT_PJP_LV_EXPORT_DISPLAY INTO WA_PJP_LV_EXPORT_DISPLAY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PJP_LV_EXPORT_DISPLAY-INSCN, sy-vline,
  WA_PJP_LV_EXPORT_DISPLAY-FPERN, sy-vline,
  WA_PJP_LV_EXPORT_DISPLAY-SPERN, sy-vline,
  WA_PJP_LV_EXPORT_DISPLAY-PERNR, sy-vline,
  WA_PJP_LV_EXPORT_DISPLAY-NAMEJ, sy-vline,
  WA_PJP_LV_EXPORT_DISPLAY-KATAK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PJP_LV_EXPORT_DISPLAY you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_PJP_LV_EXPORT_DISPLAY TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_PJP_LV_EXPORT_DISPLAY INTO WA_PJP_LV_EXPORT_DISPLAY.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PJP_LV_EXPORT_DISPLAY_STR, 
RESCA TYPE STRING,
RESTX TYPE STRING,
GIAJI TYPE STRING,
GIAJT TYPE STRING,
INSCC TYPE STRING,
INSCN TYPE STRING,
FPERN TYPE STRING,
SPERN TYPE STRING,
PERNR TYPE STRING,
NAMEJ TYPE STRING,
KATAK TYPE STRING,
KATAS TYPE STRING,
FORGE TYPE STRING,
ORGEH TYPE STRING,
ORGTX TYPE STRING,
PROTY TYPE STRING,
PROTX TYPE STRING,
INSNR TYPE STRING,
CONPR TYPE STRING,
INSPR TYPE STRING,
DEDAM TYPE STRING,
AMOUT TYPE STRING,
FILNO TYPE STRING,
NDENO TYPE STRING,
DEDNO TYPE STRING,
MATNO TYPE STRING,
MSGTX TYPE STRING,
WAERS TYPE STRING,
COMDT TYPE STRING,
TRMDT TYPE STRING,
SHOFG TYPE STRING,
ININS TYPE STRING,
INPRO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PJP_LV_EXPORT_DISPLAY_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_PJP_LV_EXPORT_DISPLAY_STR-RESCA sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-RESTX sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-GIAJI sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-GIAJT sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-INSCC sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-INSCN sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-FPERN sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-SPERN sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-PERNR sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-NAMEJ sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-KATAK sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-KATAS sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-FORGE sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-ORGEH sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-ORGTX sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-PROTY sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-PROTX sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-INSNR sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-CONPR sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-INSPR sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-DEDAM sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-AMOUT sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-FILNO sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-NDENO sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-DEDNO sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-MATNO sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-MSGTX sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-WAERS sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-COMDT sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-TRMDT sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-SHOFG sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-ININS sy-vline 
WA_PJP_LV_EXPORT_DISPLAY_STR-INPRO sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.